The characteristic features of diffusion and diffusion controlled processes in polycrystalline metals and alloys with body-centered cubic and face-centered cubic crystal lattice during annealing and creep were examined. Consideration was given to the interrelated processes of diffusion, grain boundary sliding/migration, which determine

plastic deformation development at specified conditions. The distinctive features of grain boundary diffusion of substitution impurity from coating were investigated for nanostructured metals and alloys and the respective coarse grain counterparts. The manifestations of low temperature and/or high strain rate superplasticity in nanostructured metals and alloys were considered.

Grain Boundary Diffusion and Plasticity/Superplasticity of Polycrystalline and Nanostructured Metals and Alloys. Y.R.Kolobov, I.V.Ratochka: Materials Science and Engineering A, 2005, 410-411, 468-71